Design of segmented thermoelectric generator based on cost-effective and light-weight thermoelectric alloys

Hee Seok Kim, Keiko Kikuchi, Takashi Itoh, Tsutomu Iida, Minoru Taya

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

A segmented thermoelectric (TE) generator was designed with higher temperature segments composed of n-type Mg2Si and p-type higher manganese silicide (HMS) and lower temperature segments composed of n- and p-type Bi-Te based compounds. Since magnesium and silicon based TE alloys have low densities, they produce a TE module with a high specific power density that is suitable for airborne applications. A two-pair segmented π-shaped TE generator was assembled with low contact resistance materials across bonding interfaces. The peak specific power density of this generator was measured at 42.9 W/kg under a 498 C temperature difference, which has a good agreement with analytical predictions.

Original languageEnglish
Pages (from-to)45-52
Number of pages8
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume185
Issue number1
DOIs
Publication statusPublished - 2014 Jul 1

Keywords

  • HMS
  • MgSi
  • Segmented π module
  • Specific power density
  • Thermoelectric generator

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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